package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.Result;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;
import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * 员工管理
 */
@RestController
@Slf4j
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;


    /**
    * 员工登录
     * @param request
     * @param employee
    * */
    @PostMapping("/login")
    public Result<Employee> login(HttpServletRequest request, @RequestBody Employee employee){

        //1.将页面提交的密码进行md5加密
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
        //3.没有查询到 返回登录失败
        if(emp == null){
            return Result.error("登录失败");
        }

        //4.密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)){
            return Result.error("登录失败");
        }

        //5.查看员工状态是否是封禁 已禁用，返回员工已禁用的结果
        if(emp.getStatus() == 0){
            return Result.error("账号已禁用");
        }

        //6.登录成功 将员工id存入Session并返回登录成果结果
        request.getSession().setAttribute("employee",emp.getId());
        return Result.success(emp);
    }

    /**
    * 员工退出登录
     * @param request
    * */
    @PostMapping("/logout")
    public Result<String> logout(HttpServletRequest request){

        //1.清理Session中的用户id
        request.getSession().removeAttribute("employee");

        //2.返回结果
        return Result.success("退出成功");
    }



    /**
    *新增员工
     * @param employee
     * @param request
    * */
    @PostMapping
    public Result<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());

        //设置初始密码为123456，使用md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        employeeService.save(employee);

        return Result.success("新增员工成功");
    }


    /**
    * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
    * */
    @GetMapping("/page")
    public Result<Page> page(int page,int pageSize,String name){
        log.info("page = {},pageSize = {},name = {}",page,pageSize,name);

        //构造分页构造器
        Page pageInfo = new Page(page,pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<Employee>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);
        return Result.success(pageInfo);
    }


    /**
     * 根据id查询员工 对编辑进行页面回显
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public Result<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);
        if(employee != null){
            return Result.success(employee);
        }
        return Result.error("没有查询到员工信息");
    }


    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     * */
    @PutMapping
    public Result<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

        employeeService.updateById(employee);

        return Result.success("员工信息修改成功");
    }

}
